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_______ is bad for your health, and you’d better________.

A．Smoke；give it up                 B．Smoking; give it up

C．Smoke; give up it                  D．Smoking; give up it

     is bad for your health，and you’d better     ．

A．Smoke；give it up                  B．Smoking；give it up

C．Smoke；give up it                  D．Smoking；give up it